# Accruing Key Rewards * To accrue key rewards, a Sentry Key must participate in a Challenge. * A Challenge is created approximately once every hour. This means there will be \~720 Challenges per month. * Each Sentry Key that participates in a Challenge will receive a pro rata share of the Network Reward, as described in [Network Rewards](https://xai-foundation.gitbook.io/xai-network/en/about-xai/xai-tokenomics/network-rewards). * By default, each Sentry Key has a 0.01% probability of participating in a Challenge. This is known as the Bronze Tier. * The probability that a Sentry Key will participate in a Challenge will increase if the Key is staked in a Pool with higher Tier than Bronze. Each Reward Tier is explained in the section, [Staking Rewards and Tiers](https://xai-foundation.gitbook.io/xai-network/en/staking-explained/staking-rewards-and-tiers). * To maximize the potential of earning Network Rewards from a Sentry Key, it is strongly recommended that you participate in a Pool and run the Sentry Wallet (a.k.a. Operator) 24 hours a day, 7 days a week. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://xai-foundation.gitbook.io/xai-network/en/about-xai/sentry-keys-explained/accruing-key-rewards.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.